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// Station · 11m ago

KMSS

Massena International Airport Richards Field
CAT MVFR
WIND CALM
VIS 4.0 SM
CEILING OVC at 1,800 ft
T/Td 13.9°C / 13.3°C
ALTIM 29.88 inHg
WX -RA BR
ELEV 215 FT
44.9362°N / 74.8443°W
LOCATION · Massena, US
N
WIND
000°0 kt
KMSS · 215 FT
© OSM · CartoDB

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC
NOW · 00Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
4.0 SM
 
 
 
CEILING
OVC018
 
 
 
LAYERS
OVC018
 
 
 
T / Td
14 / 13
 
 
 
ALTIM
29.88"
 
 
 

// Interpretation

MVFR — ceiling 1,800 ft. Winds calm, visibility 4.0 SM, overcast at 1,800 ft. Reported weather: light rain and mist (-RA BR). Mist is water droplets thinning visibility to between 5/8 and 6 SM — the moist, lighter cousin of fog. Would drop to IFR below 1,000 ft ceiling or 3 SM visibility, or rise back to VFR above 3,000 ft and 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KMSS 130053Z AUTO 00000KT 4SM -RA BR OVC018 14/13 A2988 RMK AO2 SLP118 P0001 T01390133

KMSS · day 13 at 00:53 UTC · winds calm · visibility 4.0 SM · overcast at 1,800 ft · temp 14°C / dewpoint 13°C · altimeter 29.88" Hg · weather: light rain and mist (-RA BR) · automated station w/ precipitation discriminator · sea-level pressure 1011.8 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
05 HDG 050° —CALM —— 5,601'
23 HDG 230° —CALM —— 5,601'
09 HDG 090° —CALM —— 4,000'
27 HDG 270° —CALM —— 4,000'
Pattern altitude: 1,215 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA -1°C

200FT
-15 FT BELOW FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV215 FT OAT+14°C ISA DELTA-1°C PRESSURE ALT254 FT
// Performance equivalent Operating here right now feels like operating at K1B1 (Columbia County Airport, Hudson, elev 198 ft) on a standard ISA day.
// Aircraft performance impact ENHANCED
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+2%
-1%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+1%
-1%
Light jetCJ4, Phenom 300, M2
+1%
-1%

Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.

// Cloud layers · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 7,235 FT OVC018 · CEILING KMSS ELEV · 215 FT
// Reported layers (highest → lowest)
OVC018
Overcast · base 1,800 ft AGL · 8 oktas
// Computed
CEILING1,800 ft AGL HIGHEST LAYER1,800 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL7,235 ft VFR MARGIN-1,200 ft

// Sun & Moon · times in Z · bar = local day (UTC-5)

11:12ZSUNRISE
16:47ZSOLAR NOON
22:21ZSUNSET
22:51ZCIVIL END
CURRENT01:04Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS22:51Z (past) DAY LENGTH11h 09m
Waxing Crescent
ILLUMINATION3% MOONRISE12:33Z MOONSET23:42Z FULL MOON IN13 days

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